Record Power SC2 chucks are the first mini chucks on the market to offer woodturners premium quality for those who regularly turn small, complicated objects, bringing the world renowned quality of the SC3 and SC4 to the mini chuck market. The SC2 is a direct thread M33 x 3.5 drill chuck complete with standard jaws. Box contents: SC2 2.1/2" Mini Chuck 62303 40mm Standard Jwas 62831 Deep Wood Screw 60216 Chuck Key